직접분사식 디젤엔진 실린더헤드의 온도 및 열응력 분포해석(PART I)

Analysis of Temprature and Thermal Stress Distribution of a DI Diesel Engine Cylinder Head(PART I)

In this study, 3-dimensional finite element model of a diesel engine cylinder head was made to accomplish heat transfer analysis and also thermal stress and deformation analysis. Heat release analysis and Nusselt-Reynolds correlations were applied to determine the convective boundary conditions which are required for heat transfer analysis to calculate temperature distribution. Thermal stress distribution was also investigated from heat transfer analysis results. Steady state temperature and heat flux were measured by using K-type thermocouples and then compared with numerical results to give a guarantee for the propriety of numerical analyses.